4030VA-1 THUNDERBOLT® Dual-Band 40-30M Vertical Antenna

DX Engineering's Dual-Band THUNDERBOLT® 40/30 Meter Vertical Antennas are high performance dual-band pile-up busters that are tunable to operate with an SWR of 1.5:1 or less across both bands.

The maximum power rating ensures solid performance, particularly on CW. Plus, the digital modes are popular on 30 meters.

We recommend 32 radials, 32 ft. long. Fewer radials will work, but with diminished results.

This antenna includes the antenna element, insulated Extren mounting channel, mounting plate, tilt base, stainless steel hardware, and stainless steel element clamps

Features

• Full band coverage on 40 and 30 meters with SWR under 1.5:1, with no tuner needed
• 40m bandwidth greater than 750 kHz with SWR under 2:1
• Tunable above and below 7 MHz range for MARS and CAP frequencies
• Over maximum legal power handling
• Optimum 30 ft. overall height
• Self-supporting design to withstand 60 mph wind without guying